LAWSON: KANSAS CICADELLID^. 93 



Forin: Rathei- small, robust species. Length, 4 to 7 mm. Vertex 

 broader than long-, slightly and obtusely pointed and with the elevated 

 portions of front strongly elevated. Pronotum large and long, anterior 

 margin broadly rounded, posterior margin distinctly emarginate. Scutel- 

 lum short, overlapped by pronotum. Elytra coriaceous except at apex. 

 Whole dorsal surface distinctly punctate. 



Color: A green form. Head and anterior region of pronotum more 

 yellowish. Front, including reflexed portion, with lateral brown arcs. 

 In male, face black because of broadening and fusing of the arcs. 



External genitalia: Female, last ventral segment over two-thirds as 

 long as broad, lateral margins narrowed posteriorly, posterior margin in- 

 cised on either side of the medially produced lobe; pygofers long and 

 narrow, slightly exceeding ovipositor and bearing a few, coarse, short 

 hairs on either side of the ovipositor. Male, valve short and broadly 

 triangular; plates bread at base but tapering and prolonged acutely, ex- 

 ceeding the short pygofers. 



Internal male genitalia: Styles with basal half gradually tapering, a 

 large process on mesal margin for attachment to connective and poste- 

 riorly a large lateral bulge, the distal portion curved slightly outwardly, 

 toothed on mesal margin and terminating rather truncately with a dis- 

 tinct outward point; connective T-shaped, the cross piece heavier than 

 the standard ; oedagus consisting of a pair of heavy dorsally directed 

 processes and a pair of narrower, larger, sinuate and acutely pointed 

 terminal processes. 



Distribiition: This species probably occurs throughout the 

 eastern portion of the state, but hitherto has been reported 

 only from Cherokee county. 



Hosts: Found only on swamp grasses. 



Genus Graphocephala Van D. 



In this genus the head is narrower than the pronotum, the 

 vertex is flat, obtusely rounding and with a distinct margin. 

 The front is not inflated. The pronotum is narrowed anteriorly 

 and with the posterior margin slightly emarginate. The 

 elytra are long and coriaceous, venation obscured, and with 

 rather long apical cells. 



Two of the three United States' species have been taken in 

 Kansas, 



KEY TO SPECIES. 



A. Large, 9 mm. or over, vertex unmarked. coccinea. 



AA. Smaller, 6 mm. or under, vertex marked with black lines. 



verstita. 



